The short answer
Sometimes, but not first. A buyer's surveyor looks at the condition of the roof, and a clean surface does not change what they find. Have the roof inspected, fix real faults, then clean if the growth is spoiling the look. Keep photographs and receipts so the next owner and their surveyor can see what was done. A cheap clean over a failing roof helps nobody.
Looks and findings are different things
A roof streaked with black and furred with moss can put off a buyer standing at the gate, and a cleaned roof lifts the first impression. That is a fair reason to consider a clean.
Once a buyer is serious, though, the survey takes over. A surveyor goes by what they can see of the roof's condition: slipped or cracked tiles, the state of the ridge and flashings, gutters and any signs of leaks in the loft. They do not give much weight to whether it has been cleaned, and a clean roof with a cracked ridge will still earn a note in the report.
That is why a roof that is sound but dirty, and one that is dirty and failing, call for different decisions. A sound roof may only need a clean. A failing one needs repair, and a clean on top would just make the faults easier to see.
If a buyer's survey flags the roof, the usual result is a request for a repair or a price reduction. Dealing with the issues before you list gives you control over the cost and the way it is done, instead of negotiating under time pressure.
The first step is to know what you have. Our page on clean or replace roof tiles sets out how condition decides.
Repair first, clean second
The order of work matters. Cleaning before repairs can undo itself: a roofer repairing tiles walks across the slope, disturbs the surface, and the freshly cleaned roof shows scuffs and loose debris. It also wastes money if the clean exposes problems that must then be fixed.
Do it the other way round. Have the roof inspected, preferably with photographs of the slopes, ridge, hips, verges, flashings and gutters. Repair the faults the inspection finds, such as slipped tiles, cracked ridge bedding and failed flashing. Clean last, so the finished roof is the one that gets photographed for the listing.
Moss removal often reveals tiles that were hidden or held in place by growth. Our page on repairs after moss removal explains what to expect, and why you want to learn it first.
If the covering is nearing the end of its range, be realistic. HomeBuilding & Renovating (Sep 2025) gives concrete tiles 40 to 50 years and clay 60 to 80. A cleaned roof does not turn back the clock, and a buyer's report may still say the covering is aged. Better to know that now.
Choose a gentle cleaning method. Marley does not recommend jet washing, since it can damage the tile surface and shorten the roof's life.
Records for the next owner
Paperwork helps a sale. A buyer's solicitor and surveyor like to see that work has been done properly, and a buyer likes to see that the roof has been looked after.
Keep these items.
- The written quote and the invoice for any roof work, with a description of what was done.
- Before and after photographs of the roof and the loft.
- Any survey report you commissioned, including the photographs.
- Receipts for materials, and the name of the firm that did the work.
- Details of any warranty on the repair, from whoever gave it.
If building work was involved, such as a re-roof or a new covering of a different weight, you may also hold Building Regulations paperwork. Anything of that kind should go in the same folder.
A folder like this answers the buyer's questions before they are asked. It can also save a delay late in the process, when the other side's solicitor asks for evidence.
None of this obliges you to disclose more than the law requires, and we do not give legal advice on a sale. Your solicitor or estate agent can say what you must tell a buyer. What we provide is the evidence of the roof's condition and the work done to it.
What we do for a seller
The first step is a survey, with the roof measured and recorded from the slope and the loft. You see the pictures and decide what is worth doing.
If the roof is sound and just dirty, the quote is for a clean. If there are faults, we separate them out: those that a buyer's surveyor would certainly note, and those that are minor and can wait. Work the roof does not need is not suggested, and a repair is a better spend than a clean over a problem.
The quote is one total in writing, and you get a record of the work with photographs, which goes into your folder for the sale.
If you are short of time, tell us when the property is going on the market. We can plan the survey and the work around that, though we do not promise dates until we have seen the roof. We work in Farnborough, Aldershot, Fleet and Camberley, and the roof cleaning and moss removal hub explains the service in full.
